CN211206124U - Experimental device for shale vapor adsorption under different temperature and pressure conditions - Google Patents
Experimental device for shale vapor adsorption under different temperature and pressure conditions Download PDFInfo
- Publication number
- CN211206124U CN211206124U CN201921806014.7U CN201921806014U CN211206124U CN 211206124 U CN211206124 U CN 211206124U CN 201921806014 U CN201921806014 U CN 201921806014U CN 211206124 U CN211206124 U CN 211206124U
- Authority
- CN
- China
- Prior art keywords
- shale
- cavity
- communicating pipe
- experimental
- under different
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an experimental apparatus for be used for shale vapor adsorption under different temperature and pressure conditions, include: a heating cavity; the experiment cavity is arranged above the heating cavity and is communicated with the heating cavity; the balance chamber is arranged above the experiment chamber and is communicated with the experiment chamber by adopting a communicating pipe, and a high-precision electronic balance and a heating device are arranged in the balance chamber; the object placing disc is used for enabling the high-precision electronic balance to sense the weight of the substances in the object placing disc; and the terminal is connected with the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor. The utility model discloses be close true simulation actual shale stratum more to the adsorption process of vapor, have the effect of reliability and the precision of test shale adsorption steam ability under the improvement experimental conditions.
Description
Technical Field
The utility model relates to a test instrument field. More specifically, the utility model relates to an experimental apparatus that is used for shale vapor adsorption under different temperature and pressure conditions.
Background
The low fracturing fluid flowback rate is one of the engineering problems generally faced by shale reservoirs in the oil and gas exploitation process, so that a large amount of fracturing fluid (mainly water) is leaked out and retained in a shale stratum, which has adverse effects on the storage capacity of shale and the seepage of hydrocarbon gas, and the strong adsorption and storage performance of shale on water is one of the reasons for retaining a large amount of fracturing fluid. Since shale gas reservoirs usually have complex mineral compositions including clay minerals (such as montmorillonite and illite) with hydrophilicity and clastic minerals (such as quartz and calcite) and organic matters with lipophilicity, which cause the characteristic of shale mixed wetting, evaluating the adsorption capacity of shale to water vapor is a crucial research content for researching shale hydration mechanism and optimizing shale gas productivity. The water vapor adsorption capacity of shale is generally related to various factors such as mineral composition, pore structure, organic matter content, wettability and surface tension of rock, temperature and pressure environment and the like of shale, and considering that shale has strong structural heterogeneity, the shale water vapor adsorption experiment needs to be carried out on a large number of collected shale samples for deeply researching the water vapor adsorption capacity of shale in a target interval.
At present, the research on shale water vapor adsorption at home and abroad mainly utilizes a thermal weightlessness experiment, such as a paper 'clay mineral water vapor adsorption characteristic and influence on pore distribution' published in 2018 by von Dong, and researches the water absorption characteristic of shale by measuring the relation of shale quality at a specific temperature along with time. However, in an actual shale formation, the shale is often located in an underground deep part (in a high-temperature and high-pressure environment) and has a large difference from an experimental condition, so that an experimental test cannot truly simulate the adsorption process of the actual shale formation on water vapor, and cannot measure the adsorption capacity of the shale on water under different temperature and pressure conditions.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model discloses it is still another purpose to provide an experimental apparatus that is used for shale vapor adsorption under different temperature and the pressure condition for in shale vapor adsorption process, experimental apparatus can change the warm-pressing environment of test, and the actual fracturing in-process deep shale stratum of better simulation improves test reliability and precision to vapor's adsorption process and adsorption performance, provides the reference for studying the interact and the hydration mechanism of shale and water.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an experimental device for shale water vapor adsorption under different temperature and pressure conditions, comprising:
the heating cavity is internally provided with water bath equipment;
the experimental cavity is arranged above the heating cavity and communicated with the heating cavity, a first communicating pipe, a second communicating pipe and a third communicating pipe are arranged on the side wall of the experimental cavity, inert gas is introduced into the first communicating pipe, the second communicating pipe is connected with a vacuumizing device, the third communicating pipe is connected with a booster pump, and a first temperature sensor, a first humidity sensor and a pressure sensor are arranged in the experimental cavity;
the balance chamber is arranged above the experiment chamber and is communicated with the experiment chamber by adopting a communicating pipe, and a high-precision electronic balance and a heating device are arranged in the balance chamber;
the object placing disc is arranged in the experimental cavity, penetrates through the communicating pipe through a rod body and is connected with the high-precision electronic balance, so that the high-precision electronic balance can sense the weight of the objects in the object placing disc;
and the terminal is connected with the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor and records data of the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor.
Preferably, the water bath device is a water bath kettle.
Preferably, the heating device is a heating wire.
Preferably, the method further comprises the following steps: a first flow rate control valve provided on the first communication pipe.
Preferably, the method further comprises the following steps: and a second flow rate control valve provided on the second communication pipe.
Preferably, the method further comprises the following steps: and the second temperature sensor is arranged in the balance cavity, is connected with the terminal and records data of the second temperature sensor.
Shale gas reservoirs are generally rich in developed nanopores, and it is known from the theory of adsorption kinetics that developed inorganic pores (usually hydrophilic) and organic nanopores (hydrophobic) in shale provide reservoir spaces for water adsorption and storage, so that water molecules will preferentially adsorb on specific adsorption sites on the hydrophilic inorganic pore surfaces (high binding energy). Especially when the distance between the water molecules and the shale surface is small, the strength of the interaction between them is mainly controlled by van der waals force. When the temperature and pressure change (corresponding to the relative humidity change), as the relative humidity increases, water molecules will gather at adsorption sites with weaker binding energy.
The utility model discloses at least, include following beneficial effect: the experiment device measures the characteristics of water vapor adsorption of the shale by constructing different temperature and pressure conditions, and outputs the mass data of the shale sample after water adsorption to a terminal computer in real time through the high-precision electronic balance.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is the structure schematic diagram of the shale vapor adsorption experimental device of the utility model.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in FIG. 1, the utility model provides an experimental apparatus for shale vapor adsorption under different temperature and pressure conditions, include:
the heating cavity is internally provided with water bath equipment which is used for providing water vapor for the experiment cavity, and the water bath equipment is electrified and heated to improve the temperature of the experiment cavity;
the experimental cavity is arranged above the heating cavity and communicated with the heating cavity, a first communicating pipe, a second communicating pipe and a third communicating pipe are arranged on the side wall of the experimental cavity, inert gas is introduced into the first communicating pipe, the second communicating pipe is connected with a vacuumizing device, the vacuumizing device is a vacuum air extractor, the third communicating pipe is connected with a booster pump, and a first temperature sensor, a first humidity sensor and a pressure sensor are arranged in the experimental cavity and respectively sense the temperature, the humidity and the pressure in the experimental cavity;
the balance cavity is arranged above the experiment cavity and is communicated with the experiment cavity through a communicating pipe, a high-precision electronic balance and a heating device are arranged in the balance cavity, the heating device works to enable the temperature in the balance cavity to be higher than that in the experiment cavity, so that water vapor in the experiment cavity is reduced to the greatest extent and enters the balance cavity, and the highest temperature of the balance cavity cannot exceed 80 ℃;
the object placing disc is arranged in the experimental cavity, penetrates through the communicating pipe through a rod body and is connected with the high-precision electronic balance, so that the high-precision electronic balance can sense the weight of the objects in the object placing disc;
the terminal is a computer and is connected with the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor, and data of the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor are recorded.
In the technical scheme, the shale is heated before the experiment, the water of the sample is removed, and the initial mass of the original dry shale sample is recorded. Vacuumizing by using a vacuumizing device, after the vacuum degree meets the requirement, inputting inert gas into the experimental cavity through a booster pump and a second communicating pipe, enabling the experimental cavity to reach the required pressure, and stopping inputting the inert gas, so that the test condition of the experimental cavity is closer to the environment where the actual deep buried shale is located. The shale sample is placed on a placing disc, water bath equipment and a heating device are electrified and heated, the temperature of a heating cavity, an experimental cavity and a balance cavity is increased, the temperature of the balance cavity is higher than that of the experimental cavity, water vapor in the experimental cavity enters the balance cavity as much as possible, water in the water bath equipment evaporates, the shale sample absorbs steam, the placing disc is connected with a high-precision electronic balance in the balance cavity, the high-precision electronic balance automatically records the mass of the shale sample along a time axis, a first temperature sensor, a first humidity sensor and a pressure sensor in the experimental cavity transmit the sensed temperature, humidity and pressure to a terminal computer, measurement data of time, temperature, humidity, pressure and mass matching are generated, and the terminal computer analyzes and processes the measurement data. The water uptake capacity M water of the sample can then be expressed as (M1-Mo)/Mo, where M1 is the mass of the shale sample after water uptake and Mo is the mass of the dry shale sample.
Based on above-mentioned technical scheme, furtherly, water bath equipment is the water-bath, provides the structural basis of rising temperature and vapor for experiment chamber and heating chamber.
Based on above-mentioned technical scheme, furtherly, heating device is heating resistance wire, provides the intensification structure basis for the balance chamber.
Based on the above technical solution, further, the method further includes: and the first flow rate control valve is arranged on the first communication pipe and used for adjusting the speed of introducing the inert gas into the experiment cavity.
Based on the above technical solution, further, the method further includes: and the second flow rate control valve is arranged on the second communicating pipe and used for controlling the vacuumizing speed of the vacuumizing device.
Based on the above technical solution, further, the method further includes: and the second temperature sensor is arranged in the balance cavity and communicated with the terminal, and the second temperature sensor senses the temperature in the balance cavity and determines whether the temperature in the balance cavity is higher than the temperature in the experiment cavity.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (6)
1. A experimental apparatus that is used for shale vapor adsorption under different temperature and pressure conditions, its characterized in that includes:
the heating cavity is internally provided with water bath equipment;
the experimental cavity is arranged above the heating cavity and communicated with the heating cavity, a first communicating pipe, a second communicating pipe and a third communicating pipe are arranged on the side wall of the experimental cavity, inert gas is introduced into the first communicating pipe, the second communicating pipe is connected with a vacuumizing device, the third communicating pipe is connected with a booster pump, and a first temperature sensor, a first humidity sensor and a pressure sensor are arranged in the experimental cavity;
the balance chamber is arranged above the experiment chamber and is communicated with the experiment chamber by adopting a communicating pipe, and a high-precision electronic balance and a heating device are arranged in the balance chamber;
the object placing disc is arranged in the experimental cavity, penetrates through the communicating pipe through a rod body and is connected with the high-precision electronic balance, so that the high-precision electronic balance can sense the weight of the objects in the object placing disc;
and the terminal is connected with the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor and records data of the high-precision electronic balance, the first temperature sensor, the first humidity sensor and the pressure sensor.
2. The experimental facility for shale water vapor adsorption under different temperature and pressure conditions as claimed in claim 1, wherein the water bath device is a water bath kettle.
3. The experimental apparatus for shale water vapor adsorption under different temperature and pressure conditions of claim 1, wherein the heating device is a heating resistance wire.
4. The experimental apparatus for shale water vapor adsorption under different temperature and pressure conditions of claim 1, further comprising: a first flow rate control valve provided on the first communication pipe.
5. The experimental apparatus for shale water vapor adsorption under different temperature and pressure conditions of claim 1, further comprising: and a second flow rate control valve provided on the second communication pipe.
6. The experimental apparatus for shale water vapor adsorption under different temperature and pressure conditions of claim 1, further comprising: and the second temperature sensor is arranged in the balance cavity and is connected with the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921806014.7U CN211206124U (en) | 2019-10-25 | 2019-10-25 | Experimental device for shale vapor adsorption under different temperature and pressure conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921806014.7U CN211206124U (en) | 2019-10-25 | 2019-10-25 | Experimental device for shale vapor adsorption under different temperature and pressure conditions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206124U true CN211206124U (en) | 2020-08-07 |
Family
ID=71887462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921806014.7U Active CN211206124U (en) | 2019-10-25 | 2019-10-25 | Experimental device for shale vapor adsorption under different temperature and pressure conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445978A (en) * | 2021-06-19 | 2021-09-28 | 辽宁石油化工大学 | Method for optimizing hydraulic fracturing of shale gas reservoir through heat treatment |
-
2019
- 2019-10-25 CN CN201921806014.7U patent/CN211206124U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113445978A (en) * | 2021-06-19 | 2021-09-28 | 辽宁石油化工大学 | Method for optimizing hydraulic fracturing of shale gas reservoir through heat treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110470585B (en) | Experimental test device and method for shale dynamic imbibition capacity | |
| CN106525690B (en) | Method for measuring gas-water relative permeability curve by tight sandstone steady-state method | |
| CN106884635A (en) | Low, the extra-low permeability oil reservoirs CO of one kind2Drive the assay method of minimum miscibility pressure | |
| CN106837269B (en) | Low, the extra-low permeability oil reservoirs CO of one kind2Drive nearly miscible pressure area determination method | |
| CN104101563B (en) | Portable spontaneous imbibition measuring device | |
| CN103196807B (en) | The analytical approach of a kind of sandstone diagenetic process and pore evolution | |
| CN106153856B (en) | One kind evaluating apparatus of shale stability containing crack and method | |
| CN112112622B (en) | Method for optimizing soaking time after shale gas well volume fracturing | |
| CN110595953B (en) | Experimental test device and method for shale mixing wettability | |
| CN102608011B (en) | Method for determining and building bound water for crack-pore (hole) type reservoir core | |
| Zhang et al. | Water vapor sorption and its mechanical effect on clay-bearing conglomerate selected from China | |
| CN211206124U (en) | Experimental device for shale vapor adsorption under different temperature and pressure conditions | |
| Shen et al. | Quantitative studies on the characterization and evaluation of adsorbed gas and free gas in deep shale reservoirs | |
| CN110161216A (en) | A kind of device and method measuring rock core irreducible water saturation | |
| CN107727553B (en) | Device and method for measuring thick oil starting pressure gradient and seepage law | |
| CN210834567U (en) | Shale mixes wettability experiment testing arrangement | |
| CN105004650B (en) | Gas permeation test method in hypotonic rock secular distortion under vapor heat mechanics coupling effect | |
| CN105938084B (en) | A kind of chemistry imbibition agent permeance property evaluation method | |
| Döner et al. | Petrophysical characteristics of Silurian mudstones from central Taurides in southern Turkey | |
| CN209821099U (en) | Multifunctional compact gas reservoir dynamic parameter joint measurement device based on nuclear magnetic resonance | |
| CN113514382B (en) | Method for evaluating water film thickness after water phase imbibition flowback of gas reservoir rock containing swelling clay | |
| CN110470575A (en) | A kind of shale salt ion diffusivity experimental test procedures | |
| CN116539655B (en) | Method for evaluating water sensitivity of tight sandstone reservoir based on nuclear magnetic resonance technology | |
| CN203241324U (en) | Shale gas permeability determinator | |
| Bai et al. | Controlling Effect of Shale Pore Connectivity on the Adsorption State of Shale Gas: A Case Study of Continental Shale of Jurassic Ziliujing Formation, Sichuan Basin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |